Harness-motion for looms.



No. 700,6ls. l

(Nu Model.)

l 'Patented .May 20, 1902. T. BRINDLE M; 0. SVTEEBYE.

HARNESS MOTION FOR .LO0MS. v

(Application mea .my 1a', 1901.)

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Patented May 20, l902. T. BRI NDLE &. M. 0. STEERE.

HARNESS MOTION FUR LUOMS.

(Application lad July 18, 1901.)

2 Sheets-'Sheet 2..

am Mdem INVENTDR: @19m/a.

UNITED STATES PATENT OEEICE.

THOMAS BRINDLE AND MERRILL O. STEERE, OF PAVTUCKET, RIIODE ISLAND, ASSIGNORS'TO BRINDLE-STEERE COMPANY, OF PORTLAND, MAINE, A CORPORATION OF MAINE.

HARNESS-MOTION FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. I700,613, datedMay 20, 1902.

Applicant inea July 1s, 1901*.

To a/ZZ zul-bom, t may concern.-

Beit known that we, THOMAS BRINDLE and MERRILL O. STEEEE, of Pawtucket, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Harness-Motions for Looms, of which the following is a specification.

This invention has relation to looms, and nore particularly to harness-motions' there- The object of the invention is to provide` an improved harness-motion which is applicable for use on narrow-ware looms,although, as will be understood from the following description, the mechanism may be adapted for looms of other types.

The invention is designed to provide mechanism of the character referred to by means of which the harnesses will be moved quickly and steadilywithout jarring or causing dancing of the warp.

On the accompanying drawings,which illustrate one embodiment of the invention, Figure l represents a partial section through a portion of a loom equipped with the invention. Fig. 2 represents a section on the line 2 2 of Fig. l. Fig. 3 represents a perspective view of one of the guides. Figs. et and 5 illustrate sections through one of` the racks and segments and illustrate different forms of guides. Fig. 6 illustrates one of the gearsegments in detail.

p On the drawings the frameis shown asincluding in part the side standardsv a a, and the 'cross-bar b. It has'the usual crank-shaft o, connected by the gears d and e with ythe shaftf. The lastmentioned shaft is lpro- 'vided with gearing, (indicated as a whole at g',) which forms no part of this invention and need not be hereinafter-referred to. From the said shaft f, however, motion is imparted to the actuating-cams.

The harnesses include the heddle-frames h 7L, which are mounted to slide vertically between the rollers di, arranged in pairs,each pair being journaled'upon a support and adjustably secured to a bracket a' on each of the side standards. To the lower cross-bar serial No. 68,798. (No man.)

h of each heddle-frame there are detachably secured rack-barsj, the means of attachment comprising a clip h2 on the said cross-bar and a set-screw. h3, by which the rack is clamped. The said racks are arranged to slide vertically in guides, said guides being formed with a curved plate 7c, which is slotted at 7s to provide parallel curved bars k2. The racks may, if desired, rest against rollers m on on shafts m lm', Fig. 3, supported by the end portion k3 of the guide; but said rollers may be dispensed with, as shown in Fig. 5.

Preferably the curved support and the end portions are formed in one casting and are :secured to t-he cross-bar b by screws, bolts, or other fastening devices. The said end portions are further provided with arms 71:4 7c, for a purpose to be described.

The shaftfis provided on its end with a bevel-gearfi, intermeshing with and driving a bevel-gear on a transversely-arran ged shaft n, journaled in bearings on one of the side standards a. Upon this shaft is secured a plurality of cams o, having star-shaped canigrooves o', there being as many cams as there are heddle-frames. Y

Loosely journaled upon a shaft p, secured in the support p', attached to the said lastmentioned standard, are a plurality of jacks or levers q, each jack being provided with a slot q to receive the shaft p and being held in placebyawedge p2, arranged transversely of said slot. Each jack is provided with a roll or projection p3 to enter into the camgroove o of one of the cams o, so that as the said cams` rotate the jack will be oscillated,

as will be readily understood. To the lower end of each jack is attached a connectingredir, supported upon rollers r', journaled on shafts r2, secured to the arms 7.55. Each rod has a pin-and-slot connection with the lower arms s s of two bell-crank levers, which are fulcrumed upon shafts tt, secured in the ends vof arms 7a'L of the supportpreviously referred to. The hubs s of said bell-cranks are slotted, as at sito permit theirlateral-'remo'val from the fulcrums and are also apertured, as at s3, for the reception of securing-pins s, which hold them in place. The laterally-projecting armsk of the bell-cranks arel segmental at their ends and are provided with teeth SG to engage the teeth of the racksj. Inasmuch as each rod o is connected to two bell-cranks, the latter are intermeshed with the racksj of a single heddle-frame h2, and consequently the oscillation of a jack q will cause the vertical reciprocation ofthe heddleframe through the medium of the connecting rod r and the bell-cranks having the segmental racks.

The mechanism thus described is extremely simple in constructiombut highly eflicient in operation. The parts are but few, yet positive in their action, and are capable of ready removal and replacement, an important feature in case of breakage.

Itis evident thatvarious mechanical equivalents may be substituted for the devices which are herein shown and described and that this invention is therefore notvlimited to the precise details of construction herein described.

Having thus explained the nature of the invention and described a way of constructing and using the same, although without attempting to set forth all of the forms in which it maybe made or all of the modes of its use, it is declared that what is claimed isl. A harness-motion for looms, comprising a heddle-frame, a cam-actuated jack, and rack and segment mechanism interposed between said jack and said frame for positively actuating the latter.

2. A harness-motion for looms, comprising a heddle-frame, one or more dependingracks attached to said frame, guides for said frame, one or more toothed segments engaging said rack or racks, a pivoted jack or lever attached to said segment or segments, and a cam for actuating said jack.

3. A harness-motion for looms, comprising a heddle-frame, means engaging the ends of said frame for guiding it vertically, and camactuated mechanism connected to said frame for moving it positively rst in one direction and then in the other, all of the connections between the cam and the frame being rigid or inflexible. i

4. A harness-motion forlooms comprising a heddle-frame, guides for said frame, one or more bell-cranks connected to said frame, a cam-actuated jack connected to said bellcrank or bell-cranks to reciprocate said frame.

5. A harness-motion for looms, comprising a heddle-frame, means for guiding said frame, a pivoted jack, means connecting said jack with said heddle-frame, and a cam having a star-shaped cam-groove for actuating said jack, all of theconnections between the cam and the frame being rigid or iniiexible.

6. A harness-motion for looms comprising a heddle-frame, a cam having a cam-groove, a pivoted jack having a projection entering said groove, one or more bell-cranks located below the said heddle-frame and connected thereto, and a connecting rod connecting said jack with said bell-crank or bell-cranks, substantially as described.

7. A harness-motion for looms comprising a heddle-frame, a rack connected to said heddle-frame, a guide for said rack,a toothed segment engaging said rack and holding it in the said guide, and means for actuating said segment.

In testimony whereof we have affixed our signatures in presence of two witnesses.

' THOMAS BRINDLE.

MERRILL O. STEERE. Witnesses:

THOMAS RILEY, Jr., HUGH J. CARROLL. 

